Not my cache - i don't use the browser to download I use IDM, it would warn me if I had recently downloaded the file, I would be very surprised if my ISP caches anything.
Just before I posted, I downloaded and installed a version whose with an the following properties
Size 8,520,632 bytes
CRC32 273d5e5f
MD5 13ead219307e7133c52d762d7043f437
SHA-1 34fc8be68efc004ba2d3ec260341c6f60e604af8
File Version 0.0.0.0
This installed version 4.7.0, which is what I had.
I just downloaded again and got a version with
size 8,520,392
CRC32 6bf43e8e
MD5 adbf6ce2588978edf9c6f5258e972290
SHA-1 dd862f5e7e3affb3a0690181472f5cb579f15db9
File Version 0.0.0.0
This installs version 4.7.2
Can I suggest you put the version number within the install exe file and/or within the file name, and in the label of the link I posted - it has "4.7", would be better if it had "4.7.2".
I suspect I got the notification before or as your download site updated itself
Anyway all OK now.
rgds