When will AES be "upgraded"? AES is secure, but compared to other encryption algorithm which are marked as secure, it's slow. For example, ChaCha20 is faster than AES, but still secure. 

Also other standard-algorithms like SHA were upgraded in the last few years, so can we expect a AES upgrade in the near future?
No.

Basically your question is:


  The car maker X recently updated its flag ship car and the motor cycle maker Y makes a bike that is accelerating faster in straight lines - will the Lorry maker Z make a new lorry soon?


And I‘ll try to put this in laymen’s terms:

AES as a successor of DES is - in comparison to the lifetime of DES - relatively young.

Additionally, you are comparing ciphers that are not equivalent. ChaCha20 is a stream cipher and AES is a block cipher. The SHA family of hashing functions got new family members because the existing ones were showing signs of age and were generally thought to be feasible to break in several years because of the increasing computing power as well as increased progress in the cryptanalysis of sha1.

As to why you think AES would be slow, as Steffen said in the comments: this only might be true for software implementations. Yet, even smartphones do have hardware accelerated AES.

The process of replacing a cipher is very lengthy and I didn’t yet hear a call for papers for a successor of AES, so there should be at least years until AES gets replaced, probably a decade or two.

That being said, post-quantum cryptography is an active field of research and depending on when good enough quantum computers will be possible, a paradigm shift in standard ciphers will be necessary - yet I don’t think this applies to AES.