Automated DST handling will not be added in this update yet. As a workaround, do what all the others forum ask you to do - set your timezone to +1 more than you normally are (they use a 'DST' checkbox, but that's basically the same).
As to why it won't be added... there are various technical problems with timezones, and it all comes down to the fact that timezone offsets themselves aren't enough. Each country can have arbitrary DST rules that can change every year, and so we need the user's timezone in standard named format (like Europe/London or US/Central) to be able to correctly recalculate dates in the past and present.
The biggest obstacle is paradoxically the user interface. The PHP function timezone_identifiers_list() can provide a list of all timezones, but the list is HUGE and contains a lot of entries I have never heard of. Something like this would just confuse the user, and so we need to figure out how to present this information in an useable way.