Some suggested features that will make it in the initial release: location specific levels and rates, abilities, splash screen.
Features that will be implemented in the next update or later: Links to external sites (bulbapedia, smogon, etc), Event calendar, Team builder, Natures and EV stats / IV calculator.
And a lot more features which were inspired by talking with you all :-)
Meanwhile we're still working on completing our database and improving our texts. We've also improved our layout to be more good-looking and usable, screenshots will be posted later today ;-)