I thought the same too when the website was updated at the beginning of the month. However, I've long suspected that VRTP's long-term strategy was to return SW's focus as a marine park. Recently, I categorised every attraction that SW has opened & made a graph based on the attraction's operational periods/categories and it told a story:
As we all know, it was started under the 'park' name of Surfers Paradise Ski Gardens by Keith Williams, who operated a ski show as the sole attraction until 1972.
In 1972, the park was renamed Sea World and the focus shifted to marine animals (from 0% in 1972 to 64% of attractions in 1977). This focus lasted until 1977 however, it was the main attraction category until 1982. The major attraction built in this period (1972 to 1977) was the stadium that currently houses Seal Guardians.
In 1977, SW noticed a theme park called Dreamworld being built nearby so they started building thrill/family rides and lots of them (from a 8% focus in 1977 to 42% focus in 1983). Thrill/family rides became the park's main attraction category in 1982, the year after DW opened. The major attraction built in this period was the iconic Corkscrew rollercoaster.
In 1983, the park was sold by Keith Williams to Pivot Leisure (who later floated it on the ASX & thus owned 67% of the park) and from 1983 to 1991, the park diversified - it was a mix of every category but thrill/family rides was still the top category (averaging 35% of the park's attractions). The major attraction built in this period was the Water Park. Whilst separate from the park (and hence not added in the statistics I used), the Nara Resort also opened in this period too as another example of diversification (half owned by the Nara Group until 2006 when Village Roadshow became full owner of the Resort).
In 1992, Pivot Leisure sold it's 67% interest in SW to Village Roadshow & Warner Bros., who have been the main owners ever since (with 100% ownership since 2002 - Warner Bros. left the joint venture in 2006). At the time, they also owned Wet 'n' Wild & MW but Village Roadshow took full ownership in 2006. In the years prior to 1992, the Research & Rescue Foundation was formed.
Since 1992, there is an increasing focus on marine animal attractions (from 29% of attractions in 1991 to 43% of attractions in 2017) and has been the park's main focus & attraction category ever since. This is most likely because the owners wanted each of their parks to have it's own distinct identity. However, SW's late 1980's brand image of 'diversity' was never re-positioned to cater for this. The major attraction built in this period is Polar Bear Shores.
We've probably only just realised this was their strategy now as the iconic rides of the park from 1977 to 1992 have all but disappeared. Most of those rides disappearing for reasons other than reaching the end of their life span. All that's left is the Carousel. However, that is now aimed towards Nickelodeon's target market - just like nearly every new ride that's opened since 1992. They are not thrill rides but instead aimed towards families (Castaway Bay, Eye, the 4D Theatre, Bermuda Triangle, Storm Coaster & Jet Rescue). The graph also suggests this is the case and that the trend will not change course however, there is enough to suggest that only 1 new thrill ride can fit in at SW still but until someone changes SW's focus again, thrill rides will never be a major part of the park again.
A big test will be Viking's Revenge Flume Ride's replacement. All we know is, according to Clark Kirby, is that they "are planning something big and...impressive". The graph I created suggests another animal exhibit or small family ride. It depends on the size of the attraction's footprint. If the 4D Theatre remains open, the graph is most likely correct (unless there is a thrill ride, not at MW or Wet 'N' Wild Gold Coast, that you can fit in such a minimal amount of space?). If the 4D Theatre closes, the possibilities are endless (even more possibilities if it includes the (reclaimed) land near the site of the former Sea Viper rollercoaster/Pirate Ship).
I agree with @jjuttp though as SW has always been a marine park at it's core no matter how many rides it features. I've always treated the park as such. When people think of SeaWorld in the USA, they don't think of any of the rides - they mainly think of the marine animals (particularly the killer whales). However, a solid ride line-up is a bonus and always brings in extra visitation.
Since Pivot Leisure sold their 67% interest in SW in 1992, the biggest failure on the part of the owners is not re-positioning SW's brand image from the 'diversity' of the late 1980's to the marine park it has been since then. It's only now, 26 years later in 2018, that it seems they begin that re-positioning. But it's too late and SW's visitors & enthusiasts don't like the park as it is.