Is an HTC One (M8) Prime smartphone in the works?

Now that's interesting. Apparently, HTC could be working on a new high-end Android smartphone bearing the "M8 Prime" codename. Word comes from a trustworthy source, @evleaks, who did not reveal any further information about the mysterious device. This, of course, leaves plenty of room for guesstimating and speculation.
Whatever the truth turns out to be, we're guessing that we'll learn more about the M8 Prime sooner than later. But until further leaks confirm its existence, we'd recommend you to not get too excited about it yet.

Is an HTC One (M8) Prime incoming?
source: @evleaks (Twitter)