The HTC – T-Mobile team has been hard at work on bringing up an Android Powered netbook with built in 3G connectivity. While there is no impending release date, it was hinted that the yet to be named device would be showing up before the end of this year.
The final version of android 1.5 SDK release 1 is available for download (follow this like to download).The sad thing about this release is only for developers, so to upgrade to version 1.5 we may need to have to wait.
If you are a developer HTC has given steps of upgrading to android version 1.5.