At various conferences this year, people have been anticipating as many as 20-25 WiFi UMA-capable phones on the market by mid-2007.
Well, given that the current crop are all pretty long in the tooth - Nokia announced the 6136 at 3GSM in February, as did Moto with the A910. The Samsung T-709/P200 was also being talked about in the same timeframe, although it was only formally announced in July. The LG-CL400 was announced back in Sep 2005, but as far as I know hasn't shipped commercially as part of any of the current UMA services. There was also a Chi Mei ODM one, that seems to have disappeared too. (plus the Bluetooth V560 & RAZR)
But other than those.... no announcements, no launches, no sneak photos circulating on the web. Unless there's a huge imminent launch of several new ones, given the typical 4-8 month test & release cycle that seems to be normal with FMC devices, I can't see too many more being ready to ship by Q2 2007.
Mind you, there's a BT analyst event about wireless tomorrow, so who knows, perhaps I've spoken too soon....