There are 3 tools that I know of for those who are not good with JavaScript to still make Gutenberg blocks - this (Block Lab), Lazy Blocks, and ACF. For many reasons, having played with all 3, my personal preference is ACF.

On a different, note, it seems (emphasis on "seems"!!!) that, WP 5.0 has just moved to the January date... so we get some more extra time to create our blocks, and prepare our themes and plugins better, provided they don't change the code again, between now and January, even though we still have to get RC1 in the meantime...