http://www.bbc.co.uk/news/uk-scotland-glasgow-west-35291436
Pertinent when travelling with your bike or without it.
20 weeks of tunnel closure over the summer means 20 weeks of the high-level platforms being out of service. Basically the access tunnels to Queen Street need to be completely re-built at the ground level to give clearance for the electrification.
Services diverting via either the 2 low-level platforms or re-routed to Central. Expect Armageddon. And slightly longer and more inconvenient journeys.
For those unfamiliar with the intricacies of the central Glasgow rail network, it's not possible for a train approaching Queen Street from the North (i.e. Falkirk High / Croy / Linlithgow route) to get to Central (high level) without reversing at some point; trains can only access Central from the south.
The Victorians had "sorted" this problem by building the City of Glasgow Union Railway, which allowed access from the north or the south to a grand, central terminus. Unfortunately that terminus was St. Enoch (now the largest glass roof in Europe according to Wikipedia)... Also, the North British fell out with the Glasgow & South Western, the other main partner in the Union Railway and instead focused on Queen Street as its main terminus). Various schemes mooted over the last 60 or so years have never gotten far off the drawing board to connect Queen Street and Central by rails.