Sure thing. Point releases of projects generally have to be buried or downweighted on HN due to being repetitive, particularly in cases like this, in which the previous discussion spent 24 hours on the front page less than two weeks ago.

Even if it is a major upgrade, the previous thread is so fresh in the hivemind's memory that it won't get the attention or gravitas that the previous version did.

You can try submitting a blog post explaining what's new and different about this version, but you might have better success if you wait a month or two (and also hike the major version number to 2).