I noticed on Friday, while reading an extra long online article that is offered in a weekly installment, that HTC's stock browser is missing 'Reading Mode'. They must have dropped it in the latest Sense builds.
Since I have unlimited Sprint data and since I don't find myself reading long articles too often, I haven't exactly noticed the subtraction of the feature, however I am a little bummed that the opportunity to utilize the option has been removed.
(Reading mode displayed webpages as simple black and white text with all backgrounds, page styles, and formatting removed)