One of the many changes introduced with the new Boost release process is a drastic reduction in the number of officially supported compilers. Although all versions of the Borland / CodeGear compiler were left out, it should be noted that this only means that they have been excluded from the official release branch regression tests. This is not a good thing, as it makes it likely that regressions introduced late in the release process go unnoticed until after the release is issued.
On the other hand all the specific workarounds that I’m aware of are still present in the Boost source code and compilers from 5.6.4 onward work only slightly worse with Boost 1.35.0 than they did with the last few Boost releases.
To get a more precise idea of what works and what doesn’t you can take a look at the test results for the 5.6.4, 5.8.2 and 5.9.3 compilers. As you can see the 5.9.3 compiler does somewhat better than the other two, but there are things that stopped working for all three since the last Boost release.
However, now that gcc and VC++ are both rather close to standard compliance, Boost authors tend to rely more and more on advanced techniques that are only partly supported by the latest compiler, and not at all from earlier ones. This is likely to get worse – or better, depending on points of view – with each new Boost release. Let’s just hope that CodeGear manages to keep up.