Likely, you can count yourself lucky if it receives updates that long. I predict it will be max 2 years.
Sad to say, but this is a direct consequence of “shady” manufacturers who do not follow the OSS idea and release locked down and license violating products.
Anycubic went to great extremes WRT locking down on these printers.
Even more sad that most users will realize this trap after having bought such a printer.
The best thing you can all do is to spread such word and warn people to stay clear of this manufacturer. Only an impact to their business might make them rethink their policy.
Some more thoughts on this matter here: Importance of Open Source in 3D Printing and the Consequences of OSS License Infringement