It seems that Acer just announced their 10" and 7" tablets. It seems that the release is April of next year. If other manufacturers follow the same schedule you can expect that tablets are going to be taking off sometime around the summer.

Interestingly they have at least one Win7 option, which should be good for loading Ubuntu or for 'real' productivity.

To keep this Tab related: The largest competitor will be the coming iPad refresh for some time. I suspect the Tab successor will be released in the fall -- with the reputed dual-core Orion, it may prove to be the tablet to beat.

Those that are willing to wait, strap yourselves in. You're going to be waiting for a while.