So, I actually asked on Facebook what my friends thought about the idea of emailing professors before the start of the semester to introduce oneself and ask for assignments. Because, I found that idea so different from what I'm used to, I was curious how much regional differences and whatnot might be playing in.
One of the responses I got from a friend of mine who is a professor actually seemed liked it could be really useful to incoming students/parents of incoming students, so I asked if she would mind me sharing it here. She didn't, and added that her response would apply to any of the universities she's taught at which include University of Michigan in the USA, Roehampton University in the UK, and two universities in Germany where she lives now. Here's what she said:
"I would expressly discourage students from e-mailing professors in advance, unless an individual requires specific learning accommodations and it is the institution's policy for students to discuss those with instructors prior to the first session of the course. Do not get in touch just to introduce yourself; it's far better to leave a positive impression within the framework of the seminar/lecture/office hour system rather than outside it. Do not get in touch in advance to ask what the assignments will be; anything the prof is going to assign during the semester is expected to be done during the semester. (Also, do not get in touch to ask what you missed if you missed a session - ask a classmate. Exchange contact info with a classmate on the first day expressly for that purpose should a need arise.) If the syllabus is available online before the seminar begins, knock yourself out, but be aware most of us reserve the right to change things as we go along and see what our students' needs are this time round. Still, in the interest of equality, we usually want everybody to work toward the same deadlines, with access to the same information at the same time - no head starts. Finally, it's a bit like ordering a meal at a restaurant and then going into the kitchen to ask the chef if you can have a taste of the soup before it is brought out to you and other guests. Even if you think it's going to be delicious and you are dying of anticipation... chefs don't really like that. We profs don't, either. Sit tight, rest up, (read around the topic if you are especially keen), and get ready to rock and roll once class is in session."
I hope that somebody else finds it helpful as well.