Yes, there is a a roomer doing the rounds that Cloud City will be coming our way this year, and 500 is the price tag.
I can't find the list (on brickiest somewhere) but there are a few big D2C sets rumored to be heading our way:
Imperial Star Destroyer (200)
Cloud City (500)
Avengers Infinity Wars (200)
Hogwarts Castle (500)
No idea if that is true, no leaked images or details, there are a few people claiming to match set numbers to descriptions and prices, but that doesn't mean much right now.
Personally i think Cloud City is a still a stretch, mainly because it is quite dull, and Death Star aside Playsets don't sell well at this price point. But who knows, the potential for some much needed figure updates (Luke Bespin, Leia Bespin, Lando etc.) is there, but really beyond the carbo chamber and the 'I am your father' fight scene, there isn't really much to put in a set - but we will see.
My main worry if all that is true is we will have three sets out there in the 500+ price point and that is setting a new ceiling for Lego which will allow them to increase all their prices below, and sets are already too expensive (thank god for Amazon and their regular 30% off).
Anyway, mostly bought from Amazon on the afore mentioned discounted price, just working my way through most of the Last Jedi sets. Despite early reviews being negative and so forth, i am finding i rather like them. The new AT-AT is great, i love the industrial, chunkier look and the head even manages to look menacing (far better than the last AT-AT to me). The speeder is a great set, lovely vehicle. Oddly the small shuttle was a fun build with good play features. The Island hut is nice, very detailed inside. Haven't build the Star Destroyer yet, but will get there...