No. Examine the reasons he might have to do this:
1. Personal/Egotistical.
And consider the reasons not to:
1. It would increase US resolve to find him and re-solidify the loose paste holding together the international coalition established post 9/11. Mark my words; if he had kept quiet for another year, the EU participants would have stopped supporting the effort.
2. It keeps his opponents guessing while his supporters (i.e. most of the Islamic community) will gladly take even the flimsiest of evidence as proof of survival.
3. Each time he communicates with the outside world he exposes himself to detection. You can gather copious information from video (rock formation, soil, foliage, weather, seasonal attributes, topography) as opposed to audio where the maker need only eliminate background noise, deliver the tape far away from where it was created and make sure that the chain of messengers is trustworthy.
4. Periodic resurfacing creates the illusion that he is immune to our efforts to capture him. He appears to be calling the shots and this should be reassuring to his followers.
From his perspective right now, less is more.