Has anyone here who played Touhou Scarlet Curiosity can give me some help?

I've seen some trailers and Scarlet Curiosity seems very much like YS, which I love. That being said, is very hard to find any info about it online.

If you anyone could answer this, I'd be very grateful:

• Are there different difficulties as in YS? (hard, ultra hard etc?)

• Are there different game modes, bosses rush etc? Are there secret bosses?

• Does the game in fact play like the YS Series or is the trailer misleading? (I'm asking this because I know that Touhou is about Bullet Hell Shmups, so I got a bit confused)

Anyway, the game is on sale at PS Store and if it offers a good deal of challenge and replayability, I'm sold!

Thanks in advance for any help!