In your case, since you have the 1.3.x repository it means you have the PPA from the wine site (ppa:ubuntu-wine/ppa). You will have to wait until Scott Ritchie gets time to update to it. Right now he updated to the RC1 for the 1.4 branch. RC2 came today but like always the update depends on whether he gets time today or the following days.
Remember that even if the developing branch is called 1.3.x it really is the "Alpha" or Work in Progress versions of the 1.4.
In WINE, the ODD versions are for development. The EVEN versions are the stable ones.
So the 1.0.x was the stable and 1.1.x was the development versions for 1.2
Then the 1.2.x was the stable and the 1.3.x was the development versions for 1.4
When 1.4 comes out you will see 1.4 as the stable version and 1.5.x as the development branch.
For more information see How to install and configure Wine?