So I got one too, buy my merit total hasn't changed. I've confirmed this by looking at a cached version of my profile page on my phone from about seven hours ago, which shows the same merit total (3036 at time of writing), but was before theymos sent the additional merit.
Anyone else notice the same? Perhaps Loyce has scraped some relevant data to back up my suspicion?
Give it sometime, i also noticed but it changed recently from 946 to 947
Edit: It has just changed. Strange that the "forum" merit took over an hour to be added, whilst normal merits are instant.