Same here. Smuggler - still interlude, even after finishing Makeb.
Sniper - changed to Chapter 4 as soon as I started Makeb.
Same problem. Load screens were entirely accurate for my sniper, the first one I took through Makeb. For my sorc, I believe it was more or less correct and constant. My marauder and powertech both had no updated load screens until I hit the Makeb interlude, at which point it updated and was correct. Just did it for the first time on the Republic side on my scoundrel, got no updates the entire way through, and no interlude upon completion.
Really a shame. I know it's a small thing, but this inaccurate load screen thing drove me crazy for over a year on my bounty hunter. Hopefully that won't be the case again for my scoundrel.