What is the new version number? I have Studio, do I already have it?
Version 1.5.3 is current as of this writing, but there are 1 or 2 updates per week at this stage of development.
Just select "Check For Updates" under the Help menu, and it will tell you if there is an update, and
"Change Log" will tell you what's changed (and that the release of 1.5.4 is 'Coming soon!' and 1.6.0 is also not far behind).
Cheers,
Bart