It is released upstream:
t$ git tag --contains a9556289f0eea748e510edc3680e67395c876ed8 0.6.2.0
at Fri May 31 13:03:49 2013 -0500
so Ubuntu should just upgrade to use that one, but it seems the focus has been to integrate ofono for the Ubuntu touch devices recently.
It is released upstream:
t$ git tag --contains a9556289f0eea74 8e510edc3680e67 395c876ed8
0.6.2.0
at Fri May 31 13:03:49 2013 -0500
so Ubuntu should just upgrade to use that one, but it seems the focus has been to integrate ofono for the Ubuntu touch devices recently.