Since the upgrade to 4.40 the number of 'broken' features have forced me to rollback to an older version.
Removing music hangs
Wifi says it's connected but it doesnt auto upload
Battery life drops just looking at the watch!
Since rolling back all the features above are working again correctly.
I'm disappointed that there doesn't seem to have been any benefit in the upgrade to me.
I'll keep checking back in and maybe wait for 4.5 before trying the upgrade again