Google is expected to announce the release of Android 4.3 along with the improved and new Nexus devices this coming week and they have also said to be working on releasing a new Google Play Store along with these new devices even though there is an updated one. The current Google Play Store is version 4.1.1 which is neater than the previous version and portrays a wider aspect in terms of apps and movies.
At the venue , they will most probably be launching the Google Nexus 7 which is improved with Android 4.3 Jelly Bean. This is the device you can invest in before the Android 5.0 devices which are set to launch in October-September 2013 as per us. There is already an open invite by Google to certain sources.