It hasn't changed much over here, at least not the UK adverts which are most of what I see when I watch regular TV (which isn't that often, usually Sky News when a story is breaking). That said, I am very socially liberal and loved the first same-sex Ikea commercials which just tended to be basically the same commercials as the straight version - young couples starting up housekeeping, it was inclusive without sending a MESSAGE with a HAMMER to your head.
But I'm getting really tired (as are many Brits from all reports) of endless commercials where every family is bi-racial, despite the fact that only a small percentage of British families are. Now to be fair, the Brits (or the entire UK for that matter) have never had some of the DEEP issues the US has with this. When we first moved here you would see occasionally on both UK and Irish TV, commercials which occasionally had a bi-racial couple as part of the message. I remember one that was a montage of couples of all ages from tiny children to the very elderly and one couple dancing in their living room was bi-racial. I remember telling friends here at the time (the late 1990s) you would almost never see a commercial like that in the United States (man black, woman white) because that was true. And even advertising majors I went to school with said the same thing, it was simply a place advertisers did not go, ever.
Then suddenly they did, and now things have gone so far the other direction that a military recruiting ad in the UK had to be redone when it was realized (finally by someone) as it was going to print, that the poster photo had absolutely no white or traditionally British looking people on it all! They had to stop the presses and re-do the whole thing and add a pretty English Rose and British Beefeater-looking (white) soldiers to the poster.
There was nothing wrong with also having everyone else on that poster, these days they are all Brits (or Welsh, Scots, or Northern Irish) but the point was the poster effectively erased people from the Mother Culture!
And trust me, not every family in the UK (or Ireland) has a black husband (or boyfriend) and a white wife, they exist, probably more frequently than in the US as do White/Asian (Hindu or Muslim) and a lot of other combinations. But having it so way overdone gets on my nerves too, partly because it is such an in-you-face-MESSAGE.
Most of the same-sex couples I've seen in advertising here were pretty low-key like the Ikea Commercial but then I don't watch enough commercial TV to be certain of that.
Anyway, I don't think people like messages with their commercial messages, at least not when it is over the top and over done.