We all seen the article and know what is coming. The Advanced SLAM reprint with the erratum added as seen below.
However that is still not the legal Advanced SLAM as there is nothing in the errata from the latest FAQ and also the reprint is not out yet. So when playing your game this is the upgrade that you still use.
Now if you want to get some practice in for the next change you don't even have to proxy a card. Just every free action you only chose from your action bar and then go form there. No one is telling you how you should utilize your upgrades, but just so that everyone knows SLAM 2.0 (or in this case 0.2) is not out yet. It is coming, but the nerf isn't implemented just yet.