According to @upleaks, the tablet in question is called the HTC H7 and it seems that this will be a low-end tablet. This seems to contradict earlier reports that the next HTC tablet would basically be similar to the Nexus 9 in specs, except that the branding would be HTC and not Google. That being said it is possible that HTC might have more than one tablet in the works, so we might still be able to expect the higher-end model at a later date.
As for the HTC H7, @upleaks claims that it will be launched in Q2 2015, and given that we are currently in Q2 2015, there is a good chance that we can look forward to hearing an official announcement soon. Unfortunately apart from the name, not much else is known about the HTC H7, like what it looks like, what kind of specs it might pack, or which carrier it could be headed for, but check back with us later for more updates.