VEVO wrote I came across some fairly interesting observations towards the end of the game that COULD hint to what SR5 will be about. Beware, this info may contain spoilers.

14:18 Time Travel through Zin technology said possible.
18:20 Time Travel foolery showcased in what could be concept art for Saints Row 5 since they obviously now have access to time travel?
20:00 Graffiti either saying 'Saints Five' or 'Saints Rule'? Probably a crossover to confuse us?
36:06 Jane Austen, the narrator of the storyline occasionally, 'meets' the Saints when you see Zinyaks human collection. Jane Austen is also an English novelist in real life from the late 1700s and early 1800s and is also known for being an overall secret badass. Wiki here: [ Register or Signin to view external links. ]

So considering that a new character was introduced out of the blue at the END of the game, it'd seem that SR5 is an obvious yes. It's either that, or DLC. In my opinion, the character was too anticipated at the end to be just a DLC. We will just have to wait and see.

What are your thoughts? I'd like to see what you guys think.