Scotland will have a referendum on whether or not to become independent, this has now been provisionally set by SNP leader Alex Salmond as being in 2014. One predicted date is the 700th anniversary of Robert the Bruce's famous Battle of Bannockburn of 1314.
How the referendum is going to be held is currently being argued back and forth between the SNP (which has a majority government in Scotland) and the British government (of which the Tories only have 1 MP in Scotland, but the Lib Dems do have quite a few). The British government wants this issue settled ASAP (saying 2013) and a straight Yes or No to independence. Salmond wants it in 2014 and wants a three-fold question with Independence, "Devomax" and the status quo as options.
Devomax is that devolution is expanded to cover virtually everything apart from defence and foreign policy, that is virtually independence in all but name. Especially given independence the Scots won't have true independence as they're likely to keep the pound sterling as there's no chance now they'll want to join the euro (which was mooted that they would do years ago) and are unlikely to introduce their own currency either. Like Ireland, Scotland is also predicted not to join the EU's Schengen area but instead keep open borders with the UK.
The European Union is a weird issue, would the Scots have automatic joining rights to the EU, if not would they be compelled like new members to join the euro - or would they keep the British opt-out, and even if they are would they like Sweden have an opt-out in all but name. The EU is good at fudging never-before issues though, like the reunification of Germany. Spain won't be happy about the precedent of the Scots becoming independent if it happens, but I don't think anyone would disrespect a democratic referendum result.
Current polling shows it to be up in the air. Previous polling has shown a large majority against independence, but today a poll by ICM has it 40% in favour, 43% against. I always think that in referendums people undecided generally break for the status quo so I don't think they'll actually get it - but I do think they'll probably get Devomax if its an option, why the British government is trying to avoid that being an option.
Personally I have long been in favour of Scottish independence. Primarily because I'm in favour of English independence from people like Gordon Brown. Democratically the Scots and English for the last few decades have been very distinct and I don't think the status quo is healthy. Whether or not the Scots go for independence, I would like to see the West Lothian Question resolved. This is named after the former MP for West Lothian who before devolution asked how it could be right that he couldn't vote on issues affecting Blackburn in his own WL Scottish constituency, but could could vote on issues affecting Blackburn in England (or England and Wales). This is not just theoretical, the previous Labour government passed England-only laws which were rejected by a majority of English MPs but used their Scottish MPs to force them through. Ironically and disgustingly the Labour government in Scotland voted to have no tuition fees for Scotland, while the Labour Scottish MPs voted to force on England "Top-Up" tuition fees that were rejected by a majority in England. Regardless of the rights or wrongs of tuition feed, democratically that situation is wrong.
Currently if Scottish MPs were excluded, then the Tory's would have a majority in Parliament while if only English MPs voted on English-only issues (Welsh and NI excluded too) then it would have been a landslide victory for the Tories.
Last General Election:
Scotland (59 seats): 41 Labour, 11 Lib-Dem, 6 SNP (though a majority in Scottish Parliament), 1 Tory
England (533 seats): 297 Tory, 191 Labour, 43 Lib-Dem, 1 Green, 1 Speaker (indepentent, but a Tory constituency).