We are working on UNO 1.6 for some time now. 

UNO 1.6 is (again) a complete rewrite, and with the release of iTunes 7.2 we felt like "let's wait a bit and release 1.6 instead of updating 1.5".

But now with Tiger 10.4.10 update and UNO 1.6 not being at final stage yet, we will just do a small update to 1.5.

So, stay tuned for an update.

And thank you for your understanding and patience.

And thanks a lot for the incredible flow of feedback mails you people sent us!