I'm playing ranked ladder and after the games it's giving me a plus sign that I got some currency (looks pink/purpleish). No clue what this currency is or what it's used for. Is gold or reward track exp no longer given? What is this new currency?
No, it's not the same currency. This one is connected with events like the one available right now. Of course, this time it's only giving BG rewards, but usually the rewards are for constructed. Also, you should still be getting reward track xp like usual (at least I am).