This is in planning - thank you all for your patience!
Additional background and context for anyone interested:
Many have commented that it’s weird for HubSpot’s page tools to offer a multi-language option while the blog doesn’t have that feature. I agree - it doesn’t make sense 
The tools look very similar - and the management interface is completely identical across all content tools. But in the back end, the code bases are separate (necessary, as a blog (RSS feed) is inherently different from pages in how it behaves), and there were some other tools (related to the fact that the blog tool uses a single template) that need to be made multi-language friendly before the blog can become multi-language. That’s why HubSpot website and landing pages have had the multi-language feature for quite some time while the blog has not.
My team is eager to provide you with the best possible multi-language blog. We’ve spoken to many already about their multi-language needs, but we’re always looking to hear from more customers. If you’re willing to share your thoughts and experiences beyond the comments here (I’ve read them all!), please book a time to speak with me.
- Snaedis