Looks like the Symbian^3 versions of the game went live this morning in the Ovi store.
The full game Smiles you see there is for Maemo devices... i.e. the N900. Zen+Drop are for Symbian
A 5-star positive review of both games so far. Excellent!
I’m writing up a nice long post (to follow) about the new game. Hopefully finished soon.