EDIT: My question is mainly to clarify the role of HTC behind the release of Ubuntu for tablets. This question addresses similar issues about Ubuntu for phone. Though the OS's are the same, its the difference in interface that distinguishes both of them.
closed as off topic by Luis Alvarado♦, Seth♦, Minato Namikaze, hhlp, Javier Rivera Feb 20 '13 at 16:14
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There was no relation between both companies (in relation to the timing sync issue). They just happened to launch at the same date and both decided to use the same tactic (A countdown timer).
At the end, HTC launched their new and shiny HTC One and Ubuntu launched a video tour of Ubuntu for Tablets.
I would point you to the following links: