So I see that 4.10.2 is out but not showing in the upgrade section... we don't have to install .1 first do we?
Upgrades in the upgrade center are applied sequentially. If you want to upgrade from 4.9.3 to 4.10.2, you'll first need to install service packs for 4.9.3, then upgrade to 4.10.1, and then upgrade to 4.10.2. You can do it whenever you like, even after the upgrade subscription runs out (as long as the version you upgrade to was released while your subscription was active).
Also, upgrades are still provided in small batches:
For the time being, we provide upgrades to 4.10.1 and 4.10.2 in limited numbers. For example, at first we make 20 upgrade packages available for download. Those who check the Upgrade Center and download them, will get to upgrade first. After that, we make 40 upgrade packages available, and so on. This limitation gets lifted some time after the release.