Microsoft has just recently released a document detailing how Bing will affect your past and future SEO activities titled Bing: New Features Relevant to Webmasters. It is a good read and highlights the different elements of Bing that SEOs should really know. Search Engine Land has posted quite a good summary of what it entails which you should read.
What I find most interesting is the document preview function. This function allows you to hover over one of the SERPs and see a snippet of content from said page. Microsoft states that this is to allow people to get the content they want faster without leaving the SERPs page allowing them to make a more informed decision about the page they click onto. Microsoft does mention that you can disable this feature however I think that this will serve to better highlight the relevancy of your page which can only be a good thing.
Another point from the document that is worth highlighting is that if you have not already than it is worth pinging your sitemap to Bing using the following:
http://www.bing.com/webmaster/ping.aspx?sitemap=www.mysite.com/sitemap.xml
I would recommend however that you sign up to the new webmaster tools and doing it this way however.
Other than that there is really nothing that much new in terms of what we should be doing for SEO. At this present time it is much the same Microsoft mention:
Webmasters can help their websites get more visitor traffic by helping Bing best represent their content to searchers in our SERPs. Webmasters can easily do this by adding unique titles and meta descriptions to each page. If webmasters don’t provide search engines with good, keyword-oriented, well-written caption source data, the resulting captions created by algorithm, no matter how hard we try, won’t represent your website as well as those websites whose webmasters did provide this unique and important data.
…so nothing new there then.
It is worth reading the document and it is interesting to see how Bing is going to work. To echo my previous post however I do think Microsoft are on to something this time around and I do think that it is worth monitoring how the search engine develops to be better equipped for optimising for it if you are not already doing so.