Basically file transmission (like resources sent to clients) has always been chunked up. In the past the chunks were 1000 bytes each, and this turned out to be very inefficient. So we upped the chunks to 8000 quite some time ago. Transmission speeds still aren't what they should be, though, and chunking likely holds the lion's share of the blame. So the chunk size has been increased to 32000 bytes.

The upshot is that players should get their resources faster.