Recently announced software updates:

• Iterasi
  Updated browser extensions.

• Synthesio
  Dynamic tag clouds, cumulative timeline, subtopic drill-down.
  

SMA companies announcing that their products now cover Google Buzz (no chart needed to see that it's a trend):

• Attensity
  
• Gnip
  
• Radian6
  
• Sysomos
  
• Viralheat (via Mashable)