1StLawofMotion

Thank you! You really gave me all the information I was looking for. I feel so much more comfortable. 
All I need now is the case to arrive and some cable sleeves for the CPU cables for the looks  
top dollar help, that is what you gave me  

Open the case and measure its dimension is much faster.

isn't the point with this new lineup to give a videocard with best performance for money? with a new architecture and all.. perhaps it's in the pipeline?? 

Don't let yourself fooled by the looks. That is a very good PSU and on top of that it's gold rated. I suggest to keep it as it suits your need easily.
 
As for the games you play, in 1080p, I would think your current CPU can handle them.
 
If you are not sure if it will run other games you plan on playing, just go for reviews on google or YouTube. Or if someone is playing the same games and has the same CPU, they are the best ones to provide you feedback you need.
 
Afaik PUBG really likes CPU and GPU. Look for CPU usage while playing PUBG and you should have a rough idea if it will handle the new titles.

If it's a Z motherboard, which I doubt they put Z motherboards in prebuilds (but you never know), you could go for the highest CPU available or go for the best CPU that suit your needs.
 
RAM quantity - very good
SSD present - very good
GTX 1060 - very good card for 1080p
PSU - it says on the website 500W but no model or certification - would recommend check your PSU and maybe an upgrade to a better 500W one or if you want a little bit of future proofing maybe higher watts. I would recommend a 650W one with at least 80+ bronze certification but as I said you will be fine with a 500W as long it's at least 80+ bronze.
CPU - biggest upgrade you could make or not. 4460 it's still a decent CPU for 1080p, though depends on what games you want to play, some (not many) of the best AAA games might struggle a little bit. But that's something you can research on YouTube with regards the games you play.
 
CPU upgrade path (that worth the upgrade):
- non Z motherboard - i5-4690 or i7-4790
- if you're lucky to have the Z motherboard - the K counterparts - i5-4690K and i7-4790K (though you might need some extra cooling for that)

You got 2 options - I'm 95% sure it's a mATX (microATX longer term):
1. Open the case and search for the model number of the motherboard and again search on google the model
2. Download and install Speccy, CPU-Z, AIDA, etc and search for model number of the mobo and again google it and you should find everything you need to know.
 
Also, something doesn't match up - you said you have an i5 5th or 6th gen:
 
1. There is no i5 5th gen desktop model
2. The link provided says it's an i5 4460 which is 4th gen on ddr3, so if you got now 6th gen i5 still doesn't match up. How did you do the upgrade?
 
You confused me badly. Can you please clarify?