Under 100 words on this poster... or so I will claim since the screenshots are there to illustrate the points! (Not counting the authors' names, I think the count is 89 words.) This poster is for an online resource that people at the conference are familiar with, and is to inform people of recent changes to the website.
This poster wins points for simplicity. It can be read with a few glances, which is a definite win for any conference poster.
I’m always curious to see what improvements people make on their own. After she sent her first email but before I replied, Alice sent along another iteration.
I think the changes you made for the second version are good ones. Making the title more prominent, and getting rid of the outline around the “Over 900 codes!” were both good moves.
I can see why the screen grabs were rotated as a design element. I’d be tempted to tinker with the amount of rotation. I might try bringing the central screen grabs a little closer to horizontal (though not normal straight up and down).
Tiny little typesetting detail. In the right box, the field “See also” is in quotes, but the links, “Previous” and “Next” are not in quotes. There might be a case for putting “Previous” and “Next” in quotes, too, for consistently. I’m not sure what a style guide would recommend; perhaps there is some subtle stylistic difference between a field and a link.