A 26.75 Performer would be nice - particularly if it was expanded in proportion with the larger kettle - would be a nice sized table and storage area.
I don't think the 26" kettle was ever a huge seller for Weber, compared to the 18/22 inch models, which led to it being discontinued. My guess is that this will initially be a limited run with limited models available - for the diehards.
I'd really like to see a thermometer, similar to the one for the new WSM's, put into the kettles - probably with a higher temperature range. I think it'd be a nice improvement over the handle thermometer in the performer. I know this can be a custom modification, but factory installed would be nice.