I've already got another 3 poster templates (including one from the page you linked) about 90% ready to be put up on the site, I just need to find the time to finalize them and put them up. Give me a week or two and check back on the site for more!

Unfortunately it's just me working on the website and I'm also a PhD student so that doesn't leave much time to put up new templates. It doesn't help that the vast majority of them have very poor commenting and odd spacing which needs to be brought in line with the commenting style I use throughout the website.