Yes, the two ‘unveiled’ songs from Gangs of Wasseypur are here:
 
१.जीया हो बिहार के लाल(Jiya ho bihar ke laal)
२. हम  हैं सीकारी (I am a hunter)

Here are the lyrics for both!
Song 1 – Hunter (हम  हैं  सीकारी)(English lyrics by Vedesh Sukoo, Hindi by Varun Grover)

Haillloo…  Hello…  Hello

I am a hunter and she want to see my gun
When I pull it out boy the woman start to run]à (2)

She beg me to see it, she beg me to show it
But when I reveal it, she want to run and hideà (2)
 
Ooooo… ooooo …  Oooo..
Put on your hunting clothes, let we go and hunt
Please don’t be embarrassed, you could touch it if you want.
All them young one around here, ask them about me.
I am the baddest gunman that they ever see
I am a hunter and she want to see my gun
Hum hai sikari, sikari sikari

I am a hunter and she want to see my gun
When I pull it out, the woman start to run
 
Tan tan tan tan tan tan tan tan.. Tan tan tan tan tan tan tan tan.. (2)
 
Daily goli nikle, automatic, tan-tan…  (2)
With one gun in my hand and the next one around my waist
If you see this young girl with da rude look on she face

I say as a hunter, I must be brave and strong
She say that she find that my gun extremely long

Hum hain sikaari, paacket mein lambi gun,
 
Dhaayein se jo chhootey tan man howey magan..
 
Oooooo.. ooooo.. oooo..
 
This girl harasses me, she won’t leave me alone.
But that kinda behavior I really can’t condone

Hai bahut Bhokali, na kabhi ho khali – (2)

This girl harasses me, she won’t leave me alone.
That kinda behavior I really can’t condone

She says that she’s sorry, she just want to have fun.
Then she asks me kindly, if she can hold my gun

I am a hunter and she want to see my gun
When I pull it out boy the woman start to run ]—(2)

Door tak hai phamous, kar de sab ke bebas—(2)
Usko milta darsan, jisko man mein hai lagan—(2)

Laagi lagan laagi lagan…    Laagi lagan laagi lagan..
 
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गाना नंबर २  - जीया हो बिहार के लाल 

Lyrics: Varun Grover (मुखड़ा  - traditional/folk)

Jiya ho bihar…

Jiya ho bihar ke laal,
jiya tu hajaar saal,Jiya ae bihar ke laal,
jiya tu hajaar saal,Jiya ae bihar ke laal,
Jiya ae bihaar ke laal
jiya tu hajaar saal,
jiya tu hajaar saal,jiyo tu hajaar…

Tani naachi ke,
tani gaayi ke,

Tani naachi gaayi, sabke mann behlaava re bhaiyya…
Tani naachi gaayi, sabke mann behlaava re bhaiyya…
Tani naachi gaayi, sabke mann behlaava re bhaiyya…
Tani naachi gaayi, sabke mann behlaava re bhaiyya…

Bhaiyya-aa-bhaiyya-aa…
Bhaiyya-aa-bhaiyya-aa…
Bhaiyya-aa-bhaiyya-aa…

Ae….bhaiyyaa….re….

Antara 1

Tu maati ka laal re laala,
Bhaiyya-bhaiyya-bhaiyya…

Tohra magahi saan niraala,
Bhaiyya-bhaiyya-bhaiyya…

Tere purkhey jiye andhera,
aur tuney jana ujaala…

Tere purkhey jiye andhera,
aur tuney jana ujaala…

Bhaiyya-aa-bhaiyya-aa…
Bhaiyya-aa-bhaiyya-aa…

Ho…

Tere god pakhaarey ganga,
tere tej se aag jhulasta,

Tere kandhey chadh ke sooraj,
aakas mein roj pahunchta…

Jiyaa tu honhaaaaaaar….

Tani ghoom-ghaam ke, tani dhoomdhaam se…
Tani ghoom-ghaam ke, tani dhoomdhaam se…

Tani taan kheench ke, taansen, kehlaawa re bhaiyya….

तनी नाची गाई, सबके मन बहलावा रे भैय्या…
तनी जोर लगा के, सबको साथ नचावा रे भैय्या…

तनी नीके-नीके बोल पे गीत सुनावा रे भैय्या…
तनी तीखे-तीखे बोल पे ढोल बजावा रे भैय्या…

तनी झाल उठा के, ताल से ताल मिलावा रे भैय्या,
तनी ढोलक, मांदर, मटका, चम्मच, लावा रे भैय्या…

तनी ओका-बोका-तीन-तडोका गावा रे भैय्या,
तनी चन्दन-माटी, चौका-काठी लावा रे भैय्या…

तनी साँस फुला के, फूंक से धूल उडावा रे भैय्या…
तनी जान जला के, गीत को तेल पिलावा रे भैय्या…

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 तो भैया कैसा लगा?