Hi.

All the computer science branches are mostly similar except one or two subjects that might you call the domain specific. Although cloud computing is on top lately since it is the oldest CSE branch.
But it's totally on you to adopt any of the listing :
1.CLOUD COMPUTING
2.CYBER SECURITY
3.OPEN SOURCE
4.BIG DATA
5.MAINFRAME TECHNOLOGY
6.BUSINESS ANALYTICS
7.GRAPHICS AND GAMING
8. IT infrastructure
9.MANUFACTURING INDUSTRY
10.MOBILE COMPUTING (NEW)

Good luck