You can't blame anyone for wondering, really, given that with Cataclysm and Mists, the talent system has changed substantially. But, Blizzard Lead Systems Designer Greg "Ghostcrawler" Street has tweeted, indicating that the system is unlikely to change:
@jabulaniguy While I can't talk about future expansions, overall we are happy with the current spec and talent design.- Greg Street (@Ghostcrawler) October 14, 2013
The removal of the "boring" talents has gone pretty well, but the cookie cutter builds do rather remain. What that requires, though, is further work to make the talents themselves work for everyone, especially hybrids. The prevalence of cookie cutter builds doesn't mean the talent system needs another rework. Frankly, a lot has changed in Mists, both for the better and for the worse -- it's been an expansion of experimentation. I, for one, would really appreciate some consistency. What about you?